rotarX Capsulated Miniature Slip Rings for Power- and Signal Transmission
Compact Slip Rings with outer diameter from 5.5mm to 54mm
Technical Characteristics
Protection class
IP54 (higher on request, up to IP69K)
Rated Current
1-10A per ring
Housing material
plastic, aluminum or stainless steel
Number of rings
3-125
Rotational speed
0-300 rpm (up to 3.000 rpm on request)
Additional services
Transmission of field bus signals, Ethernet, USB, video signals, temperature, etc.
Electrical Specifications
- Number of rings: 3-125
- Service life: 3 million to 100 million revolutions
- Nominal current: 1-10A per ring
- Transmission of fieldbus signals, Ethernet, USB, video signals, temperature and much more.
- Combined solutions Power + signals possible
- Operating voltage: 240 VAC/DC
- Dielectric strength: ≥500V @50Hz
- electrical noise: max 35mΩ
- Insulation resistance: 1000 MΩ @ 500 VDC
2D drawing
Download detailed drawing matching the slip ring now
Catalogue
All details about our slip rings clearly arranged in the catalogue
Product selection: Capsulated miniature slip rings
Itemnumber | Number of Rings Signal | Outer diameter |
|---|---|---|
36 x 2A | 24.8 mm | |
36 x 2A | 24.8 mm | |
30 x 2A | 24.8 mm | |
30 x 2A | 24.8 mm | |
24 x 2A | 24.8 mm | |
24 x 2A | 24.8 mm |
Reliable Power and Signal Transmission through Capsulated Miniature Slip Rings
Wherever power needs to be transferred between a stationary and a rotating component, slip rings remain the reliable components of choice. Although contactless transmission options such as Bluetooth, infrared, or radio are available for signal transmission, these still have disadvantages such as susceptibility to interference, which excludes them from many applications.
When it comes to the transmission of electrical energy, however, contact transmission is practically without any viable alternative. The only options for contactless power transmission are highly wear-prone arcs or inductive systems that require high voltages.
Neither of these is technically feasible with the sizes offered by miniature slip rings. In addition, these components offer numerous other advantages.
Capsulated Miniature Slip Rings
Housing material options
Custom mounting holes
Adjustment options on the rotor
Axial or radial cable outlet
Functionality of Capsulated Slip Rings
Encapsulated miniature slip rings consist of a rotating and a stationary part. A series of contact rings are attached to the rotor, which are insulated from each other. On the inside, the contact rings are connected to an insulated cable, which is led out of the slip ring at the front. Signal cables also run into the stator part, ending in sliding contacts.
Incoming and outgoing cables always have identical colours, ensuring that they cannot be mixed up during installation. The sliding contacts inside the slip ring touch the contact rings of the rotor. The contacts are reinforced by a spring, which ensures reliable signal transmission within the technical parameters of the component.
Regardless of the angle at which the rotor is rotated relative to the stator, the transmission of signal or power current is always maintained in this way. The encapsulation serves to shield the sensitive interior of the slip rings from external interference.
All you need to ensure during installation is that the slip ring is positioned exactly in line with the rotating component. For this purpose, the encapsulated miniature slip rings often feature robust flanges with pre-drilled guides for the retaining screws.
Advantages of Capsulated Slip Rings
Depending on the degree of protection and housing material, the encapsulation protects the inner workings of the slip rings against the following disruptive factors:
- Intrusive dust
- Penetrating moisture
- Electrical interference fields
- vibrations
- slipping
- Impacts, blows and vibrations
Intrusion of dust, especially electrically conductive metal or carbon dust, quickly leads to short circuits. Since the contact rings and sliding contacts are not insulated, they are extremely sensitive to dust intrusion. Non-conductive dust can settle on the rotating components and form an undesirable insulating layer.
Moisture ingress can cause corrosion on the contacts. To ensure maximum operational reliability, the contact rings and sliding contacts are coated with silver. This metal forms only a thin oxidation layer, which is immediately removed again automatically during normal operation of the slip ring. Alternatively, the surfaces can be coated with a gold alloy, which has a positive effect on signal transmission quality and prevents oxidation.
Electrical interference penetrates the slip ring less, but it can escape from it. Even the slightest loss of contact can cause an electric arc, which emits a radio signal. This radio signal can interfere with surrounding components, especially those with wireless signal transmission. The encapsulation prevents these disruptive emissions and reliably shields them.
The enclosure is designed to be so robust that it is largely insensitive to mechanical stress. For particularly demanding environments, we also offer stainless steel enclosures. These are also ideal for hygienically critical environments. Stainless steel is very easy to disinfect and has aseptic properties.
Variations of Capsulated Slip Rings
We offer capsulated miniature slip rings of three and up to 125 transmission lines. Each ring can handle rated currents from 1 to 10 amperes and operating voltages from 12 volts to and 440 volts. This gives you complete freedom to choose which line you want to use as power current for operating consumers or as signal current for sensors. As a reserve you have a dielectric strength of up to 500 volts at your disposal. This means that even larger voltage peaks are reliably intercepted. Our slip rings work optimally in a temperature range of – 20°- +60 °C. If you are planning an application outside this temperature range, please contact us. We will find the right solution for a safe and reliable slip ring even for your special challenges.
Installation of Capsulated Slip Rings
We have made the installation of the capsulated miniature slip rings as user-friendly as possible. The slip ring is attached to the flange of the housing with the pre-drilled holes at the desired position. The flange can be designed as rotor flange or stator flange and the included mounting holes can also be customized. Make sure that this position is always exactly in the center of the rotation axis. Slight eccentric movements can still be intercepted. Larger deviations may cause mechanical stress on the ball bearing, which may have a negative effect on the service life. The colors of the incoming and outgoing cables are identical. Mix-ups are impossible. After installation of the slip rings and connection of the current-carrying lines on both sides, the slip ring is ready for use.
Use of Capsulated Slip Rings
These components are designed to establish a reliable electrical connection between a stationary and a rotating component. For this purpose, our capsulated miniature slip rings always offer maximum operational reliability at low cost. By using the capsulated miniature slip rings, you get an excellent safety reserve for unforeseen failures even in seemingly uncritical environments. Our capsulated miniature slip rings are therefore an extremely cost-effective contribution to increasing the operational reliability of your systems. In particularly demanding applications, such as aviation, space travel or the handling of chemicals, the capsulated slip rings make a significant contribution to general operational safety. Reliability, robustness and power reserves characterize each of our components.
Maintenance of Capsulated Slip Rings
The capsulated miniature slip rings are maintenance-free. They cannot be disassembled. The components are pressed and capsulated at the factory in such a way that they provide consistent reliability and transmission quality over their entire service life. Afterwards, the inexpensive components can be easily exchanged and replaced with a new part. Apart from external cleaning and regular checks of the non-locking rotatability, the capsulated miniature slip rings require no maintenance work.
Your way to the Capsulated Miniature Slip Rings
Our encapsulated miniature slip rings are the ideal components for transmitting power and signal currents to rotating components. Our comprehensive product range offers the right solution for your applications. If you have any questions about our encapsulated miniature slip rings, please call us or use our contact form. We will work with you to find the ideal encapsulated slip rings for your applications.
We supply quantities starting at 1. Special shapes or types are available on request. Give us a call. We will discuss your challenges until we have found the optimal slip ring for you. Trust in our expertise and experience. Our encapsulated miniature slip rings are used in tens of thousands of applications worldwide. Whether you need a one-off or a series component, we supply encapsulated miniature slip rings that you can rely on completely.
Practical slip ring solutions for your application
Product catalogue for all slip rings
Find out about the different slip rings in our current overview. Transmission technology for complex industrial and safety-relevant applications form the core of our product range. All products can be individually adapted to the applications in order to offer you added value. Premium engineering - that is our claim for every single product we manufacture. We would like to convince you of this.
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